Adesso iMouse T30 - Wireless Programmable Ergonomic Trackball MouseMeet one of the newest models of the Adesso Trackball product line, the Adesso iMouse T30. It incorporates the palm grip design where each user can rests his entire hand over the mouse. This design encourages users to move their cursor by rotating the track ball using their thumb and reduces the need of hand movement. It is cable free by utilizing the 2. 4 GHz radio frequency technology, offering a wireless range of up to 30 feet. It's also fully